ASTM B690, Iron-Nickel-Chromium-Molybdenum Alloys, UNS N08366, UNS N08367, Seamless Pipe, Seamless Tube, UNS N08367, 00Cr20Ni24Mo6N, AL6XN, AL6XN plus(ATI), FH

ASTM B690 Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloys (UNS N08366 and UNS N08367) Seamless Pipe and Tube

Standard: ASTM B690

Material: UNS N08367
Equivalent Material: 00Cr20Ni24Mo6N, AL6XN, AL6XN plus(ATI)

Chemistry Composition

C, %	Mn, %	P, %	S, %	Si, %	Cr, %	Ni, %	Mo, %	N, %	Cu, %
0.03 max	2.00 max	0.040 max	0.030 max	1.00 max	20.0-22.0	23.5-25.5	6.00-7.00	0.18-0.25	0.75 max

Mechanical Properties

Tensile Strength , MPa	Yield Strength, MPa	Elongation, %
670 min	310 min	30 min	WT≤0.187"
655 min	310 min	30 min	WT>0.187"

Outside Diameter & Tolerance

Hot-Finished	Outside Diameter, mm	Tolerance, mm
	OD≤101.6	+0.4/-0.8
	101.6＜OD≤190.5	+0.4/-1.2
	190.5＜OD≤228.6	+0.4/-1.6
Cold-Finished	Outside Diameter, mm	Tolerance, mm
	OD＜63.5	±0.25
	63.5≤OD＜76.2	±0.30
	76.2≤OD≤101.6	±0.38
	101.6＜OD≤190.5	+0.38/-0.64
	190.5＜OD≤228.6	+0.38/-1.14
NPS	3.2≤OD≤38.1	+0.4/-0.8
	38.1＜OD≤101.6	+0.8/-0.8
	101.6＜OD≤203.2	+1.6/-0.8
	203.2＜OD≤457.2	+2.4/-0.8
	457.2＜OD≤660.4	+3.2/-0.8
	660.4＜OD≤863.6	+4.0/-0.8
	863.6＜OD≤1219.2	+4.8/-0.8

Wall thickness & Tolerance

Hot-Finished	Outside Diameter, mm	Tolerance, %
	OD≤101.6, WT≤2.7	+40/-0
	OD≤101.6, 2.7＜WT≤3.8	+35/-0
	OD≤101.6, 3.8＜WT≤4.6	+33/-0
	OD≤101.6, WT>4.6	+28/-0
	OD>101.6, 2.7＜WT≤3.8	+35/-0
	OD>101.6, 3.8＜WT≤4.6	+33/-0
	OD>101.6, WT>4.6	+28/-0
Cold-Finished	Outside Diameter, mm	Tolerance, %
	OD≤38.1	+20/-0
	OD>38.1	+22/-0

Length: 5800mm; 6000mm; 6096mm; 7315mm; 11800mm; 12000mm; and so on.
Max developed length: 32 meters, also U bending can be offered, each leg length can be 15.24 meters.

Keyword: ASTM B690, Iron-Nickel-Chromium-Molybdenum Alloys, UNS N08366, UNS N08367, Seamless Pipe, Seamless Tube

More information about AL6XN

AL6XN is a superaustenitic stainless steel with outstanding resistance to chloride pitting, crevice corrosion and stress corrosion cracking. AL6XN is a 6 moly alloy that was developed for and is used in highly aggressive environments. It has high nickel (24%), molybdenum (6.3%), nitrogen and chromium contents that give it excellent resistance to chloride stress corrosion cracking, chloride pitting, and exceptional general corrosion resistance. AL6XN is primarily used for its improved pitting and crevice corrosion resistance in chlorides. It is a formable and weldable stainless steel.

Because of its nitrogen content, AL6XN has greater tensile strength than common austentitic stainlesses, while retaining high ductility and impact strength.

Corrosion Resistance of AL6XN

Chromium, molybdenum, nickel and nitrogen all contribute to overall AL6XN Ring and Barresistance to corrosion by various media. Chromium is the principal agent for conferring corrosion resistance in neutral or oxidizing environments. Chromium, molybdenum and nitrogen increase resistance to pitting corrosion. Nickel imparts the austenitic structure. Nickel and molybdenum both provide increased resistance to chloride stress corrosion cracking in reducing environments.

The characteristics of AL6XN

- Excellent resistance to pitting and crevice corrosion in chloride solutions
- Practical immunity to stress corrosion in NaCl environments
- High Strength and toughness

The applications of AL6XN

- Reverse osmosis desalination equipment and pumps
- FGD Scrubbers
- Chemical process tanks and pipelines
- Seawater heat exchangers
- Tall oil distillation columns and packing
- Offshore oil and gas production equipment
-Pulp bleaching plant washers, vats, press rolls and pipelines

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